Pulmonary Wedge PressureCardiac OutputHemodynamicsHeart FailureVascular ResistanceBlood PressureCardiac CatheterizationPressureThermodilutionHeart RateCentral Venous PressureCardiac Output, LowHeartStroke VolumeCatheterization, Swan-GanzPulmonary CirculationMyocytes, CardiacDogsVentricular PressureVentricular Function, LeftPulmonary EdemaHeart Function TestsHydrostatic PressureEchocardiographyOxygen ConsumptionEchocardiography, DopplerDye Dilution TechniqueCardiac Output, HighTime FactorsBlood VolumeRegional Blood FlowPulmonary ArteryDiastoleCardiac Surgical ProceduresCardiac Pacing, ArtificialHeart VentriclesHypertension, PulmonaryMyocardial ContractionCardiography, ImpedanceHypertensionBlood Flow VelocityMonitoring, PhysiologicBlood Pressure DeterminationAtrial Natriuretic FactorArrhythmias, CardiacSystoleElectrocardiographyMyocardiumOxygenProspective Studies